论文部分内容阅读
桥头连接处的路面表面排水系统的主要任务是迅速排除降落在路面、路肩范围内以及由桥面汇流来的雨水,如若路面上的雨水不能及时有效地排出,那么路面与车轮之间的摩擦力就会降低,这极易引起交通事故的发生:另外,高速行驶的车辆会使路面上积有的雨水雾化,遮挡司机视线;再有,雨水会通过路面上的空隙、裂隙或裂缝,渗入到路面结构内部,从而引起路面的早期破坏,严重者还会影响到路基的稳定,使桥头路基出现沉陷。因此,要解决这些问题,就需要合理地进行路面表面排水系统的设计。
The main task of the pavement surface drainage system at the bridgehead is to quickly eliminate the rainwater that falls on the road surface, the shoulder area and the confluence of the bridge deck. If the rainwater on the road surface can not be effectively discharged in time, the friction between the road surface and the wheel It will easily lead to traffic accidents. In addition, vehicles running at high speed will atomize the rainwater accumulated on the road surface to obstruct the driver’s attention. Further, the rainwater will penetrate through the gaps, crevices or cracks in the road surface To the internal structure of the pavement, causing early damage to the pavement. In severe cases, the stability of the subgrade will also be affected, causing subsidence at the bridgehead subgrade. Therefore, in order to solve these problems, it is necessary to carry out the design of pavement surface drainage system reasonably.